6 signs you have high blood sugar

Blurred vision

When there is excess sugar in the blood, it can affect some unexpected areas in the body, like your eyes, according to the Cleveland Clinic. Essentially, extra sugar (along with a little water) gets trapped in the lens in the middle of the eye, causing a blurred effect, Dr. Hatipoglu explains. (This is temporary and not the same as the damage to the eye that can occur in the long term with a condition like diabetes.)